Granted Patent
Utility
US 4,451,239 · App. 06/424,105
Hydroplane apparatus
Inventors:
James M. Hoenstine, Thomas E. Ray
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Sep 27, 1982
Inventors
James M. Hoenstine
Thomas E. Ray
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.